Note that you should be cautious with disabling the referrer by setting network.http.sendRefererHeader to 0 as some websites might not work properly or may not be able to redirect you after visiting a login page.

Best is not to use external cleaners as this might corrupt Firefox's cache management.If you are concerned then clear the disk cache manually once and check what happens the next time you use built-in Firefox means to clear the cache (Clear Now Options/Preferences > Advanced > Network; Reload the page for updating).

In Private Browsing mode only the memory cache is used and the disk cache is disabled (i.e. no session data is stored in the profile folder).

Grumpus wrote:@AlfieBrown - open /Tools/Options/Advanced/NetworkDo you see cached web content?Is the setting "Override Automatic Cache Management" available and is it checked?Is there a factor in "Limit Cache to"? What is it?Is there anything in the block next to or underneath "Cached Web Content and User Data"?Have you located all the Mozilla folders in your system?

Have you been able to use Regedit to locate the various places in the Windows Registry which index and save a cache for Windows indexing

Thank you Grumpus, your tip is what I was looking for - the limit cache was set to default 350 megs - Will try with 0 even if it means slow browsing.I use Regedit to remove keys that 'Completely" uninstalled programs left behind.other keys I do not know so do n it mess with.Again thanks.My best to you.